Topic Summaries

Bacterial diseases

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Stem cells, microscopy, and microorganisms

Plant disease and monoclonal antibodies

The brain and the eye

Resource cycles and environmental change

Disease Symptoms Transmission Details
Salmonella Fever, abdominal cramps, vomiting, and diarrhoea Ingesting spoiled or unhygienic food
  • Food poisoning
  • In the UK, poultry are vaccinated against salmonella to control spread
Gonorrhoea Thick yellow or green discharge from the vagina or penis and pain when urinating Sexual contact (STD)
  • Was easily treated with penicillin until many resistant strains appeared
  • Treated with antibiotics and prevented by using barrier method of contraception

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